Have you played a FH before? Which other racing games did you like so far?
FH is arcade, you can adjust a lot, but it's definitely easier than simulators. It's a car collector from the start (at least as long as the game as a service part and the player based auction house is still available), no "career". Not a real story either, just there's a festival and you are the new star, but there are special side activities with themes, also collaborations with Top Gear etc. Besides Lego DLC and some fancy clothing it has a more serious tone as NfS e.g., no "cool" characters or flashy effects.
I'd recommend to get the Ultimate, price difference isn't much right now and you get two addons, Lego is about a small Lego city with a few cars, but you can also use the usual cars. Fortune Island is mostly dirt terrain and bad weather conditions. Depending on playstyle 5-10 additional hours each.